Christmas Vacation. and A Christmas Story. Both are funny in different ways.
I'm not sure, but isn't Planes, Trains, and Automobiles a kind of holiday story. If I remember right, Steve Martin is trying to get home to his family for Christmas, and John Candy offers to drive him home. That is a very funny movie, but, only a small portion of it has to deal with the holiday.
The same can be said for Home Alone. The only thing about that movie, is that the kid is home alone for Christmas, the rest is just a lot of gags. But, it is also a very funny movie, though the ones that followed it, were kinda lame.
I just thought of another one. It's gay oriented film called "Make The Yultide Gay." When a guy goes home to his family for Christmas, and his lover shows up unexpected. The guys mother is a riot!! And, there are some pretty funny scenes.
Like "I wanna be on top! I wanna be on top!" The mother teeling the story of how much her son loves his bunk bed! LOL!!